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3 years ago

13

I think its B..

1 answer:

Brilliant_brown [7]3 years ago

8 0

Infinitely many if you don't require integer sides. Your answer is right either way.

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Which expression is equivalent? 6(2x + 3) − 4(5x + 2) A) 8x + 10 B) 8x − 10 Eliminate C) −8x + 10 D) −8x − 10

Anarel [89]

Answer:

C

Step-by-step explanation:

6(2x + 3) - 4(5x + 2)
12x + 18 - 20x -8
-8x +10

4 0

4 years ago

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David and Josh are both practicing for an upcoming swim tournament. Every week, David swims for 3x hours at an average speed of

Ugo [173]

3x = 5(x-4)

I am not sure about the equal sign though.

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4 years ago

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Prove that when x> 1, a triangle with side lengths a = x2 - 1, b = 2x, and C = x2 + 1 is a right triangle. Use the Pythagorea

Mekhanik [1.2K]

Answer:

see explanation

Step-by-step explanation:

If the triangle is right then the square of the longest side (hypotenuse) will equal the sum of the squares of the other 2 sides.

longest side is x² + 1, then

(x² + 1)² = $x^{4}$ + 2x² + 1

The sum of the square of the other 2 sides

(x² - 1)² + (2x)²

= $x^{4}$ - 2x² + 1 + 4x² = $x^{4}$ + 2x² + 1

Hence triangle is right

7 0

4 years ago

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The sum of negative eighteen and a number is eleven. What is the number?

ivanzaharov [21]

I agree with the person above.
The sum of negative eighteen and a number is eleven:
-18 + x = 11 which is the same as A. x - 18 = 11; x = 11 + 18; x = 29

4 0

3 years ago

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Find the slope of the line through each pair of<br> points.<br> (-2,-19), (-20, 11)

sertanlavr [38]

Answer:

$m=\frac{11+19}{-20+2} \\m=\frac{30}{-18} \\m=\frac{-5}{3}$

Step-by-step explanation:

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3 years ago

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